Dispenser

ABSTRACT

Volatile material dispensers are disclosed that include a substrate having a first wall portion with a first grasping portion and a second wall portion with a second grasping portion. The first wall portion and the second wall portion are substantially coplanar in a first state. The volatile material dispensers may further include at least one hinge joining the first wall portion and the second wall portion along a central axis and an insect control active. At least one of the first wall portion and the second wall portion is moveable about the central axis to form a configuration in which the first and the second wall portions are substantially not coplanar in a second state. The first grasping portion and the second grasping portion are coaxial with the central axis in the first state and the second state.

CROSS REFERENCE TO RELATED APPLICATIONS

Not applicable

REFERENCE REGARDING FEDERALLY SPONSORED RESEARCH OR DEVELOPMENT

Not applicable

SEQUENCE LISTING

Not applicable

BACKGROUND OF THE INVENTION

1. Field of the Background

The present invention relates generally to a passive volatile materialdispenser.

2. Description of the Background

Various volatile material dispensing devices are known that generallyinclude a reservoir that holds a volatile material and may include ahousing or support structure to retain the reservoir. These devicestypically either allow passive diffusion of the volatile material tooccur without the aid of a dispensing mechanism or enhance and/orfacilitate the release of the volatile material using a dispensingmechanism. Often prior passive dispensers incorporate volatile materialsinto waxes and gel systems that dissipate during use. However, suchmedia tend to be fragile and are susceptible to impact, extremetemperatures, and changes in humidity.

One answer to the fragility of such dispensers is to use a more robustmedium, such as cellulose charged with one or more volatile actives. Forexample, one type includes a pre-scented or custom card insert made ofpaper (e.g., blotting paper), a non-woven porous material, or asynthetic carrier material such as extruded polyethylene or moldedpolystyrene that holds a volatile active. The card may be square orrectangular with parallel perforation lines extending between oppositesides of the card to allow the card to be easily rolled or formed to asize to be inserted into a roll of paper towels or toilet paper.

Another example includes an insect control article that has a substrateimpregnated with a passively emanated active insect control ingredientselected from transfluthrin or other pyrethroids. The substrate may bepaperboard, an open pore cellulosic material, coiled corrugated paper,and the like. The article may include hanger means and is preferablypositioned within a room or similar space with air movement.

However, such prior art designs are poorly designed for maximizingemissions. For example, monolithic or minimally porous designs inhibitair flow through the dispenser. Similarly, such designs may onlydispense volatile materials in a unidirectional fashion. Still further,such designs typically have static emission rates.

Attempts to improve upon these prior designs, for example, by increasingsurface area to improve emission rates, have typically led to morecomplex dispensers. For example, certain dispenser devices, such as thatshown in U.S. Application Publication No. 2012/0055075, are designedsuch that they can be folded and unfolded into three dimensionalstructures with one or more elements to repel flying insects, likemosquitoes. The devices are provided with a plurality of body sheetsattached to each other at a plurality of locations. When fully open, thedevice presents a plurality of chambers with functional surfaces thatmay be treated with substances that attract, repel, or capture flyinginsects.

However, such complex dispensers require more materials and increasedmanufacturing steps for construction. It follows that complex dispensersare more expensive due to greater material costs due to multiple piececonstruction and greater labor costs due to their multiple stepmanufacture. Moreover, these complex dispensers create significantamounts of scrap material due to the multiple component pieces that havedifferent shapes and sizes. There is a need, therefore, for passivedispensers that maximize the dispenser surface area exposed to air flowduring use, without requiring unnecessary waste of materials orexcessive manufacturing steps.

SUMMARY OF THE INVENTION

According to one aspect, a volatile material dispenser includes asubstrate having a first wall portion with a first grasping portion anda second wall portion with a second grasping portion. The first wallportion and the second wall portion are substantially coplanar in afirst state. The volatile material dispenser further includes at leastone hinge joining the first wall portion and the second wall portionalong a central axis and an insect control active. At least one of thefirst wall portion and the second wall portion is moveable about thecentral axis to form a configuration in which the first and the secondwall portions are substantially not coplanar in a second state. Thefirst grasping portion and the second grasping portion are coaxial withthe central axis in the first state and the second state.

According to another aspect, a volatile material dispenser includes asubstrate including a first wall portion with a first grasping portionand a second wall portion with a second grasping portion. The first wallportion and the second wall portion are joined by at least one hinge ata central axis and are substantially coplanar in a first state. Thevolatile material dispenser further includes an insect control active.At least one of the first wall portion and the second wall portion aremoveable to form a configuration in which the first wall portion and thesecond wall portion are substantially not coplanar in a second state. Atleast a portion of at least one of the first wall portion and the secondwall portion spans the central axis.

According to a further aspect, a substantially flat blank sheet isadapted for assembly into a plurality of volatile material dispensers.The blank sheet includes a plurality of tessellated substrates, eachsubstrate including a first wall portion and a second wall portionconnected to the first wall portion.

BRIEF DESCRIPTION OF THE DRAWINGS

Other aspects and advantages of the present invention will becomeapparent upon reading the following detailed description and uponreference to the drawings in which:

FIG. 1 is an isometric view of a front, top, and left side of adispenser in a first state;

FIG. 2 is a front elevational view of the dispenser of FIG. 1;

FIG. 2A is a front elevational view of the dispenser of FIG. 1 accordingto another embodiment;

FIG. 3 is a left side elevational view of the dispenser of FIG. 1;

FIG. 4 is a top plan view of the dispenser of FIG. 1;

FIG. 5 is an isometric view of a front, top, and left side of thedispenser of FIG. 1 in the second state;

FIG. 6 is a front elevational view of the dispenser of FIG. 5;

FIG. 7 is a rear elevational view of the dispenser of FIG. 5;

FIG. 8 is a top plan view of the dispenser of FIG. 5;

FIG. 9 is a rear elevational view of the dispenser of FIG. 5 convertedinto a second state by a user grasping first and second graspingportions;

FIG. 10 is a top plan view of a blank sheet of volatile materialdispenser substrates according to one embodiment;

FIG. 11 is a front, bottom isometric view of a dispenser according toanother embodiment in a first state;

FIG. 11A is a front elevational view of the dispenser of FIG. 11 in asecond state;

FIG. 12 is a front, bottom isometric view of a dispenser according toanother embodiment in a first state;

FIG. 12A is a front elevational view of the dispenser of FIG. 12 in asecond state;

FIG. 13 is a front, bottom isometric view of a dispenser according toanother embodiment in a first state; and

FIG. 13A is a front elevational view of the dispenser of FIG. 13 in asecond state.

DETAILED DESCRIPTION OF THE INVENTION

As depicted in FIGS. 1 to 13A, a dispensing device 10 (e.g., a volatilematerial dispenser) generally includes a substrate 12 and a volatilematerial 14 disposed on and/or in the substrate. The dispensing device10 is adapted to passively dispense the volatile material 14 whenexposed to the air and may have increased rates of emission of thevolatile material when air flows through and/or around the substrate 12.The substrate 12 includes a first wall portion 16 and a second wallportion 18 attached to the first wall portion along a central axis 20.The substrate 12 may also include one or more apertures 22 of any shapeto permit the dispenser 10 to be hung, for example, from a wall hangerdisplay prior to use or another hanging location when in use to increaseair flow around and/or through the dispenser. Additionally, a string orsimilar device (not shown) may be provided through the aperture 22 toassist in hanging the dispenser 10. In one embodiment, the aperture 22is centered along the central axis 20 of the dispensing device 10,though the aperture may be disposed in another location.

The dispenser 10 further includes a first grasping portion 24 and asecond grasping portion 26 located on the first 16 and second 18 wallportions, respectively. The first 24 and second 26 grasping portions aredisposed such that they are centered on the central axis 20 of thedispensing device 10. The first wall portion 16 may be attached to thesecond wall portion 18 by various means, such as one or more hinges 28.While three hinges 28 are shown in the embodiment depicted in FIGS.1-10, more or fewer hinges are contemplated herein (e.g., see FIGS.11-12A).

The substrate 12 is designed to carry the volatile material 14, whetheron a surface thereof and/or absorbed therein, and release it into theambient environment once exposed thereto. In one embodiment, thesubstrate 12 includes a volatile active-permeable material or a porousmaterial, such as a cellulose fiber-containing substrate. Cellulosefiber-based substrates may include an amount of cellulose by weightranging from about 50% to about 99%, or about 75% to about 99%, or about95% to about 99%, or about 97.5% to about 98.5%, or more or less.Similarly, cellulose fiber-based substrates may include an amount of asecondary material by weight ranging from about 1% to about 50%, about1% to about 25%, or about 1% to about 5%, or about 1.5% to about 2.5%,or more or less. Secondary materials include, for example, binders,pigments, polymers, resins, dyes, combinations thereof, and othermaterials known in the art. In one embodiment, a cellulose fiber-basedsubstrate may have about 98.5% cellulose and about 1.5% wet strengthpolyamide resin.

In one embodiment, cellulosic materials, such as paperboard may be used.Additional substrate materials contemplated include crepe paper, printerpaper, A4 paper, and other cellulosic materials. Additional examples ofmaterials contemplated for the substrate 12 include plastics, polymers,fabrics, non-woven substrates, such as a PET non-woven substrate, and/orcombinations thereof. Additionally, the substrate 12 may includecombinations of manufactured, natural, and recycled or reclaimedmaterials. It is further contemplated that the substrate 12 may includea laminate composed of two or more layers of materials, wherein thelaminate may include only volatile active-permeable materials orcombinations of volatile active-permeable and impermeable materials,such as a metal or plastic layer.

In one embodiment, the substrate 12 may have a flat, smooth appearance.In another embodiment, however, the substrate 12 may have varioustextures and/or surface patterns. For example, the substrate 12 may havea rough surface, a smooth surface, a channeled surface, and combinationsthereof that may increase surface area and/or the rate of emanation ofthe volatile material 14 (or volatile composition, which is usedinterchangeably with volatile material herein) associated therewith.

Further criteria that may be relevant for choosing a substrate 12include the thickness or caliper of the substrate. For example, thesubstrate 12 may have a thickness (±10%) of about 0.15 millimeters (mm),or about 0.3 mm, or about 0.4 mm, or about 0.5 mm, or about 1 mm, orabout 2 mm, or about 3 mm, or about 5 mm, or about 10 mm. In addition,the basis weight of cellulosic materials may be of interest whenchoosing such substrates. For example, a basis weight (±10%) of about250 grams per square meter (gsm), or about 300 gsm, or about 330 gsm maybe desirable. Further, the rapidity of a cellulosic substrate may beconsidered. For example, a rapidity (±10%) ranging from about 30 to 50milliliters per minute (ml/minute), or about 40 to 60 ml/minute, orabout 50 to 70 ml/minute, or about 70 to 100 ml/minute, or a rapidity ofabout 50 ml/minute, or about 60 ml/minute, or about 70 ml/minute, orabout 100 ml/minute may be desirable. Another factor to be consideredfor cellulosic substrates includes wet burst strength. For example, adesirable substrate may have a wet burst (±10%) of about 180 centimetersH₂O, or about 215 centimeters H₂O, or about 250 centimeters H₂O, orabout 280 centimeters H₂O.

Rigidity or stiffness of a substrate may be a further criterion forconsideration in choosing a substrate. Appropriate rigidity may aid inthe appearance and stability of the substrate by reducing the amount ofcurl of the substrate when impregnated with a composition and/or whenexposed to humid conditions. Similarly, in one embodiment, it ispreferable to use a substrate with sufficient rigidity such that thefirst wall portion 16 and the second wall portion 18 substantiallymaintain their form or shape when the dispensing device 10 is convertedfrom the first state to the second state.

One measure of stiffness is Taber Stiffness or the bending moment(represented in gram-centimeters (g-cm) or milli-Newton meters (mN*m)).For cellulosic substrates, these measurements may be taken along themachine direction (MD) and cross machine direction (CD) orientations ofthe cellulosic fibers of the substrate. For example, minimal bendingmoments for a desirable substrate may have a range (±10%) of about 5 toabout 10, or about 10 to about 25, or about 20 to about 100, or about 50to about 175, or about 100 to about 225, or about 150 to about 275, orabout 200 to about 325 g-cm or greater.

By dosing or coating the substrate 12 with an appropriate composition,air encountering the dispensing device 10 will acquire a portion of thevolatile material 14 thereon and/or therein and dispense it from thedispensing device. Suitable volatile materials/actives may include, forexample, insect repellents or insecticides. Alternatively, any othervolatile material known to those skilled in the art may be used.

In one embodiment, the insect control active may include D-teflumethrin,transfluthrin, prallethrin, vaporthrin, metofluthrin, tefluthrin,esbiothrin, other synthetic pyrethroids, and combinations thereof. Inanother embodiment, the insect control active may include insectrepellents, such as, for example, mosquito repellents. The compositionmay solely include an insect control active, or may further include anoil-based and/or water-based carrier, a hydrocarbon, an alcohol, forexample, ethanol, or other solvent or carrier, and combinations thereof.It is contemplated that one or more fragrances may be used as “use up”indicators, such that when a user can no longer perceive the scent ofthe fragrance(s), the strength of the insect control active is no longereffective for its intended purpose and a new device is required or thedevice must be “recharged” with another dose of the composition orreplaced. In this embodiment, the emanation rate of the fragrance(s) andthat of any volatile material are substantially the same. Additionaluse-up cues may include individual or combinations of appearing anddisappearing inks and the like. Any fragrance may be used hereinincluding, for example, a floral scent, a fresh scent, a lavender scent,a eucalyptus scent, a pine scent, a spice scent, and combinationsthereof.

In one embodiment, a volatile composition may include a fragrance, acarrier, and volatile active/active ingredient in an amount as depictedin Table No. 1.

TABLE NO. 1 Composition. Component Approximate Wt % (±10%) Fragrance 75to 97% Carrier  0 to 17% Volatile active 3 to 8%

In another embodiment, the components of a volatile composition, oncecombined, may be thoroughly mixed and dosed onto the substrate 12 in anydesired amount. For example, the compositions may be dosed in an amountranging from about 1 to 2 grams, or about 2 to 4 grams, or about 4 to 8grams, or about 8 to 20 grams, or about 20 to 50 grams, or about 1 gram,or about 2 grams, or about 4 grams, or about 8 grams, or about 10 grams,or in an amount of about 20 grams, or about 50 grams per cellulosesubstrate measuring about 9 centimeters by about 17.5 centimeters andhaving a caliper width of about 1 millimeter.

The substrate 12 is preferably capable of holding a dose of the volatilecomposition containing the volatile material in a relatively evendistribution thereon and also capable of allowing evaporation inresponse to the air flow equally from all exposed surfaces. Thesubstrate 12 may also allow for wicking of the active ingredientfollowing dosing to ensure efficient distribution throughout thesubstrate 12. Dosing/loading may be accomplished by dropping, spraying,printing, soaking or other conventional delivery of a liquid compositionto the substrate 12.

The dispensing device 10 may be employed in a first state, as shown inFIGS. 1-4 where the first wall portion 16 and the second wall portion 18of the substrate 12 are substantially coplanar. As illustrated in FIG.2A, the substrate 12 includes the central axis 20 along a major lengthof the dispensing device 10 and an axis W along a major width of thedispensing device. Further, an axis Z is provided orthogonally to theaxes 20 and W. In the first state, a plane A defining a front surface ofthe first wall portion 16 is parallel to axes 20 and W. Similarly in thefirst state, a plane B defining a front surface of the second wallportion 18 is parallel to axes 20 and W, and therefore, is coplanar withplane A. When the dispensing device 10 is placed in the second state,one of the first wall portion 16 or the second wall portion 18 may becharacterized as still being parallel to the axes 20 and W, whereas theother wall portion would no longer be parallel thereto.

The dispensing device 10 may be maintained in the first state until auser grasps the first grasping portion 24 and the second graspingportion 26 and moves (e.g., twists, pivots, or rotates) the dispensingdevice causing the first wall portion 16 and the second wall portion 18,and therefore planes A and B, respectively, to move relative to oneanother about the central axis 20 to create a second state with aconfiguration where the first wall portion and the second wall portionare substantially not coplanar, as is shown in FIGS. 5-9. FIG. 9, inparticular, illustrates how a user may grasp the first grasping portion24 and second grasping portion 26 and twist the dispensing device 10 toconvert it from the first to the second state. Only one of the firstwall portion 16 and the second wall portion 18 need be moved to obtainthe configuration where the first wall portion and the second wallportion are substantially not coplanar. Alternatively, both the firstwall portion 16 and the second wall portion 18 may be moved to createthe configuration where the first wall portion 16 and the second wallportion 18 are substantially not coplanar. Either of the first wallportion 16 or the second wall portion 18 may be moved clockwise orcounterclockwise about the central axis 20 relative to the unmoving wallportion. Alternatively, both the first wall portion 16 and the secondwall portion 18 may be moved in opposite directions (e.g., one movingclockwise and the other moving counterclockwise).

In the second state, the dispensing device 10 has a substantiallytriangular configuration such as seen in FIGS. 5-9, where the first wallportion 16 and the second wall portion 18 are substantially notcoplanar. As shown in FIG. 8, in the second state plane A of the firstwall portion 16 may remain parallel with axes 20 and W, whereas plane Bof the second wall portion 18 may now be parallel with axes 20 and Z,and orthogonal to plane A. Plane A and plane B need not be perpendicularto one another to be not coplanar, and indeed any degree of variation ofeither plane A or B with respect to the other is contemplated toconstitute a configuration in the second state.

In one embodiment, the dispensing device 10 may include one or moreattachment point(s) 30 that join the first wall portion 16 and thesecond wall portion 18 at a location anywhere along a seam 32 exclusiveof the central axis 20. The attachment point 30 helps to maintain thedispensing device 10 in the first state until a user decides to convertthe dispensing device into the second state by twisting the dispensingdevice to break the attachment point. The attachment point 30 may beformed by an adhesive, a continuity of the substrate material, or anyother chemical or mechanical based attachment means known to one ofskill in the art. Further, the attachment point(s) 30 may additionally,or alternatively, comprise a conventional perforated portion(s) or tearstrip as known to one of skill in the art.

In the second state, the first 16 and second 18 wall portions separatealong the seam 32 to create void spaces 34 therebetween to increase theeffective surface area of the dispensing device 10. The void spaces 34allow for greater air flow through the dispensing device 10 and anincreased rate of emanation of the volatile material 14 into theenvironment.

In one embodiment, the substrate 12 may be of any size or shape. Inanother embodiment, the dispensing device 10 shape conveys anaesthetically pleasing concept of balance. This sense of balance isachieved, in part, by a portion of at least one of the first wallportion and the second wall portion 18 spanning the central axis 20, asseen in FIG. 2A. Here, each of the first 16 and second 18 wall portionshas some percentage of its surface area, represented by shaded regions Fand S, respectively, on either side of the central axis 20 when viewedin the first state. For example, the regions F and S may separatelyrepresent at least about 1%, or about 5%, or about 10%, or about 25%, orabout 50%, or more or less, of the surface area of the correspondingwall portion that spans the central axis 20 to convey the concept ofbalance to a user.

In another embodiment, the dispensing device 10 of the presentdisclosure may be sold in a package in the first state where the first16 and second 18 wall portions are substantially planar. Any number ofdispensing devices 10 may be included in the packaging, such as one,three, ten, and more or fewer. Further, the packaging may be made of anymaterial that preserves the volatile material 14 within the substrate 12during shipping and storage (for example, is impervious to the volatilematerial), such as a cellulosic material, a plastic material, metalmaterial, and combinations thereof. Moreover, the packaging may be ofany useful and/or aesthetic shape or configuration known to one skilledin the art, such as a pouch, a bag, a box, a laminated structure, andthe like.

In one embodiment, a user may initiate use of a dispensing device 10,for example, a mosquito repellent card, by opening a pouch containingone or more dispensers and removing the dispensing device from thepackaging. Thereafter, the dispensing device 10 may be retained in afirst state or converted from the first state to a second state toincrease volatile material 14 emission. Alternatively, a string orsimilar item may be inserted through the aperture 22 to hang thedispensing device 10 in a room. In some embodiments, the string orsimilar item may already be provided in an attached manner to thedispensing device 10 upon removal of the dispensing device from thepackage. Upon deployment in a room, a dispensing device 10 may require aperiod of time to reach full strength. For example, it may require about4, or about 6, or about 8 hours to reach full strength.

Dispensing devices 10 of the present disclosure may be used in aninterior space or an exterior space. For example, a dispensing device 10may be effective against mosquitoes in a room having a size of about3×about 3 meters, or about 4×about 4 meters, or about 5×about 5 meters,or more or less. Further, dispensing devices 10 of the presentdisclosure may have an effective duration of continuous use of about 1day, or about 2 days, or about 4 days, or about 7 days, or about 2weeks, or about 1 month, or about 2 months, or more or less.

In another embodiment, the substrate 12 may vary in size, however, theoutline of the substrate may be shaped in such a way such that thesubstrate tessellates, or fits together without gaps, with one or moreadjacent substrates, as seen in FIG. 10. In one particular embodiment,the substrate 12 may have a curvilinear form that combines curvedportions and straight lines. Tessellated dispensing devices 10 combinethe advantages of efficient manufacturing parameters with aestheticallypleasing shapes. Moreover, these features in concert with articulatingdispensing devices 10 that transform from a first state to a secondstate provide more sophisticated dispensing devices that require littleto no material waste for manufacture and improved volatile materialdelivery. Further, greater manufacturing efficiency may be achieved byusing tessellated substrates 12, as are seen in FIG. 10. Here, a blanksheet 100 (i.e., a single or monolithic sheet 36 of substrate material,such as paperboard) is shown that includes several substrates 12outlined thereon of similar design to those in FIGS. 1-9. The outline ofeach substrate 12 is tessellated with each adjacent substrate.

Tessellation maximizes use of the blank sheet 100 and minimizes waste.In fact, no waste of material occurs between adjacent substrates 12. Forexample, as can be seen in FIG. 10, a top end 40 of a first substrate 12a abuts a bottom end 42 of a second substrate 12 b to form an intersect44. The intersect 44 is adjacent a sidewall 46 of a third substrate 12 cand another sidewall 48 of a fourth substrate 12 d and may be coaxialwith the major width axis W of the substrates 12 c and 12 d. Between thetop end 40, bottom end 42, and sidewalls 46 and 48, no portion of theblank sheet 100 is unused. In the embodiment shown in FIG. 10, a totalof eight substrates 12 are shown to tessellate with the substratesimmediately adjacent on the blank sheet 100, though more or fewer couldbe arranged on a blank sheet by varying the size and/or outline of thesubstrates. Therefore, it is apparent that the substrates may beassembled from the blank sheet without waste of material betweenadjacent substrates (no portion of the blank sheet between substratesgoes unused). Moreover, the tessellated outlines enable fewermanufacturing steps, as one cut creates at least two sides of twosubstrates 12. Still further, each feature of each substrate 12 of theblank sheet 100 may be outlined at one time prior toassembly/manufacture (for example, via die cutting or other process) tofurther reduce manufacturing steps and minimize waste.

Additional tessellating forms are contemplated herein, such as thoseseen in FIGS. 11-13A. Here, three additional dispensing devices 10 withtessellated substrates 12 are shown in the first state (FIGS. 11, 12,and 13) and the second state (FIGS. 11A, 12A, and 13A). These dispensingdevices 10 share similar features with those depicted in FIGS. 1-10.However, in contrast to the curvilinear-form dispensing devices 10 shownin FIGS. 1-10, these dispensing devices 10 further include a staticcenter of gravity (Cg) that remains coincident with the central axis 20(and also does not move along the central axis) when the dispensingdevices are disposed vertically in either the first or the second state.

Contemplated dispensing devices 10 may further include text 38 on eitheror both of the first 16 or second 18 wall portions and also on a frontand/or back surface of the dispensing device 10. In one example, thetext 38 may include one or more of an instruction, a label, adescription of the dispenser's materials, contents, and/or fragrance, acalendar that allows a user to record a day and/or date of initial useand record the number of days of use, an advertisement, an indication ofthe dispenser's effective lifespan, an indicium, an icon, a picture, alogo, a description of the insects that are effectively repelled and/orkilled by the dispenser, a disease claim that indicates the type ofdisease-carrying insects the dispenser repels and/or kills, a countryindicator that indicates in which countries the dispenser may bemaximally effective, a brand name, a product name, a product descriptor,a caution, an avatar, and combinations thereof.

In one embodiment, the text 38 may include instructions that direct auser to open a container (not shown) in which the dispenser 10 iscarried, such as a pouch, box, can, or other package, remove thedispenser from the container to activate the dispenser, identify a spaceto place the activated dispenser, and place the activated dispensersubstantially in the center of the identified space, such as an indoorarea, a room, a hall, a closet, a porch, and the like. The text 38 mayfurther include instructions that direct a user to record an initialdate of use of the dispensing device 10 on the device, such as on acalendar disposed thereon, allow a period of time to elapse for thedispensing device to reach full strength, and leave the dispensingdevice in the space for a specified period of time from the initial dateof use. For example, the instructions may direct the user to use thedispensing device 10 for about 7 days. Further, instructions may directa user to replace the dispensing device 10 with a new dispensing deviceafter the effective lifespan has passed. Moreover, the instructions maydirect the user to use the dispensing device 10 in a room with a fan orin an area with air flow.

INDUSTRIAL APPLICABILITY

The dispensing devices described herein advantageously combine thefunctional characteristics of an insect control active dispenser that isadjustable between first and second states to maximize the dispensersurface area exposed to air flow during use, without requiringunnecessary waste of materials and excessive manufacturing steps.

Numerous modifications will be apparent to those skilled in the art inview of the foregoing description. Accordingly, this description is tobe construed as illustrative only and is presented for the purpose ofenabling those skilled in the art to make and use the invention and toteach the best mode of carrying out same. The exclusive rights to allmodifications which come within the scope of the application arereserved. All patents and publications are incorporated by reference.

I claim:
 1. A volatile material dispenser, comprising: a substratecomprising a first wall portion with a first grasping portion and asecond wall portion with a second grasping portion, wherein the firstwall portion and the second wall portion are directly joined by at leastone hinge having a length, a portion of which extends along a centralaxis of the substrate, and are substantially coplanar with respect toone another in a first state; and an insect control active, wherein atleast one of the first wall portion and the second wall portion aremoveable to form a configuration in which the first wall portion and thesecond wall portion are substantially not coplanar with respect to oneanother in a second state, and wherein a portion of at least one of thefirst wall portion and the second wall portion spans the central axis.2. The volatile material dispenser of claim 1, wherein a portion of thefirst wall portion, the second wall portion, and the at least one hingeare between the first grasping portion and the second grasping portion.3. The volatile material dispenser of claim 1, wherein the first wallportion and the second wall portion are offset by at least ten degreesin the second state.
 4. The volatile material dispenser of claim 1,wherein the first wall portion has a first curvilinear side and thesecond wall portion has a second curvilinear side.
 5. The volatilematerial dispenser of claim 4, wherein the first curvilinear side andthe second curvilinear side are directly joined in the first state.
 6. Avolatile material dispenser, comprising: a substrate comprising a firstwall portion with a first grasping portion and a second wall portionwith a second grasping portion, wherein the first wall portion and thesecond wall portion are joined by at least one hinge having a length, aportion of which extends along a central axis of the substrate, and aresubstantially coplanar with respect to one another in a first state; andan insect control active, wherein at least one of the first wall portionand the second wall portion are moveable to form a configuration inwhich the first wall portion and the second wall portion aresubstantially not coplanar with respect to one another in a secondstate, wherein a portion of at least one of the first wall portion andthe second wall portion spans the central axis, and wherein a portion ofthe first wall portion, the second wall portion, and the at least onehinge are between the first grasping portion and the second graspingportion along the central axis.
 7. The volatile material dispenser ofclaim 6, wherein at least 1% of the surface area of each of the firstwall portion and the second wall portion spans the central axis.
 8. Thevolatile material dispenser of claim 6, where the at least one of thefirst wall portion and the second wall portion are moveable by pivotingabout the central axis.
 9. The volatile material dispenser of claim 8,where the at least one of the first wall portion and the second wallportion are moveable by pivoting in opposite directions about thecentral axis.
 10. A volatile material dispenser, comprising: a substratecomprising a first wall portion with a first grasping portion and asecond wall portion with a second grasping portion, wherein the firstwall portion and the second wall portion are substantially coplanar withrespect to one another in a first state; at least one hinge directlyjoining the first wall portion and the second wall portion along acentral axis of the substrate; and an insect control active, wherein atleast one of the first wall portion and the second wall portion ismoveable about the central axis to form a configuration in which thefirst and the second wall portions are substantially not coplanar withrespect to one another in a second state, and wherein the first graspingportion and the second grasping portion are coaxial with the centralaxis in the first state and the second state and are separated by the atleast one hinge.
 11. The volatile material dispenser of claim 10,wherein the first wall portion and the second wall portion form asubstantially not coplanar configuration in the second state when a usertwists the substrate by means of the first and second grasping portions.12. The volatile material dispenser of claim 10, wherein the substratecomprises a porous substrate.
 13. The volatile material dispenser ofclaim 12, wherein the porous substrate comprises a cellulosic material,a plastic, a polymer, a fabric, a non-woven substrate, and combinationsthereof.
 14. The volatile material dispenser of claim 10, wherein thesubstrate comprises paper-board.
 15. The volatile material dispenser ofclaim 10, wherein the insect control active comprises a pyrethroid. 16.The volatile material dispenser of claim 15, wherein the pyrethroidcomprises transfluthrin or metofluthrin.
 17. The volatile materialdispenser of claim 10 further comprising a carrier.
 18. The volatilematerial dispenser of claim 17, wherein the carrier comprises afragrance.
 19. The volatile material dispenser of claim 10 furthercomprising an aperture centered along the central axis for hanging thevolatile material dispenser.
 20. The volatile material dispenser ofclaim 10, wherein the at least one hinge further comprises a pluralityof hinges.